Machine for making coil-springs



A. McK. PARKER. MACHINE FOR MAKING COIL SPRINGS. APPLICATION FILED JUNE 12. 1919.

4 l I ll 'ul III WITNESSES lNl/E/VTOI? Q. I ATTORNEYS Patented Jan. 13, 1920.

Georgetown and the base may be secured to UNITED STATES PATENT OFFICE. 1 ARTHUR llIoKEVES PARKER, OF GEOIRG IIEVIOWN, SOUTH CAROLINA.

V MACHINE FOR MAKING COIL-SPRINGS.

.' Specification c1 ietters Patent.

Patented Jam-13, 1920;

Application filed June 12, 1919. Serial No. 308,573.

To all whom it may concern:

' Be it known that I, ARTHUR McK. PARKER, a citizen of the United States, and a resident of Geor etown, in the count of have invented certain new and useful Imrovements in Machines'fo'r'Making Coilgprings', of which the following is a specification.

My invention is an improvement in machines for making coil springs, and has for its object to provide a. simp e,-easily operated machine of the character specified b means of whichsprings of an desired diameter may be coiled, and-wit the coils at various distances apart. 3

In the drawings: 3

Figure 1 is a front view of the improved machine; Y 1

Fig. 2 is a side view;

In the present embodiment of the invention, a suitable su porting frame is provided, consisting oi a base 1 and upright plates 2 and 3 which allel and spaced apart from eachother, and

by means of screws 5 or the like. j

lever 6 is pivoted to the outer face of the plate 3 by means of a bolt and nut 7, a coil spring 8 being arranged between the head of the bolt and the lever for'normally pressing the lever toward the plate. The plate 3 18 extended below the base, as shown in Fig. 2, and thisextended portion has an are shaped slot 9 which is formed on an arc whose center is the bolt 7.

A boltlO is passed through this slot from the rear forwardly, and through a registering openin in the lower end of the lever 6, the head 0 the bolt being behind the extension of the plate. A wing nut 11 en ages the bolt outside of the lever, and it Wlll be evident that by turning the wingn'utin the proper direction the lever maybe clamped to the plate. j

The plates 2 and 3 have registering series of openings 12 of different size, the open-' ings r'anglng from large to pairs of registering openings are designed to receive interchangeable each of which is provided atoner'end with a crank 14 and at theotherjwith a diametrical opening 15 'forreceivingione end" of the wire .16 from which the spring is formed. The wire is tensioned duringthe a turning of the same upon the crankshaft tate of 'South Caro ina,

are substantially par 8. fixed support I the f spring is opening 15 of that spindle corresponding to thediameter of the coil to be formed, this e proper pair small, and the crank shafts 13,.

diametrical slot 17 or s indle by means of a a screw bolt 19 which is are shaped slot 20 in thedlethe slot in the head of the bolt may be set at any angle with respect'to the spindle 12 with which it is being used.

Referring to Fig. 1, it

will be noticed that I the diametrical slot is beveled or; flared in both directions. That'portion of the plate 3 above the slots 12 is reduced, the front face of the platebeing cut away, as shown.

The lever 6 at the end adjacent to the open- I ings '12 is beveled tov form an inclined edge 22, and

ing the roper spacing of the coils of the spring uring the winding thereof. The end of. the lever having the bevel 22 is adjusted toward and from the plate 3 by means of a set screw 23 which is threaded through the lever into engagement with the face of the plate.

- It will be understood that the set with edge. contact w1th the guide the spindle, this set screw bein that portion of the slot 20 which to the spindle in use. 24 is used. This bar 1s on the set-screw 7 and t jacent to the openings 12. The free end of the bar 24 will engage the wireas it winds on the spindle and will hold it close against ace of the plate 3 as shown in Fig. 2, while the'lever 6 will lay the wire properly on the spindle. v

In 0 ration, the wire from which the to be formed is engaged with the 1s nearest ivoted at one end e other end is adspindle being inserted in th of openings 12. The body of the wire is enga ed with the slot 17 of the bolt 19. The flever 6' or 24, as the case. may be, is adjusted to properly lay the s indle, and the spindle is rotated. The s ot 17 is a tensioningdevice, and it will be evident that asthe spindle wirelwill be.

this is the laying edge for insurplaced in In small wire a bar coils upon the 1 is rotated the upon the spindle andwill be tightly wound thereon, and the coils outer face of will be properly spaced.

The pitch of the coil of the spring is controlled'by the longitudinal movement 0 the spindle 13, by the levers 6 and 24. The lever 24 holds the wire close agamst the plate 3, while the lever 6 determines the pitch of the coil, being adjustable toward and from the lever 24, for this purpose. When the wire is engaged with the end of the spindle and the spindle is turned with the levers 6 and 24 properly adjusted, the wire will be laid upon the spindle in coils equally spaced apart from each other by the levers 6 and 24, and the formation of these coils will feed the spindle longitudinally.

It will be noticed, referring to Flg. 2, that the end of the setscrew 23 which engages the plate 3 is tapered, as indicated at 26, and the bar 24 has a taperlng opening through which the tapering portion extends into engagement with the plate 3.

I claim:

l. A device of the character specified comprising a suitable sup ort having upstanding laterally spaced p ates, a lever pivoted intermediate its ends to swing on the one of the plates, said plates having are shaped series of registering openings concentric with the pivotal connection of the lever, thatplate carrying the lever having an are shaped slot above the series and an are shaped slot at thelower end of the plate, said openings being of varying diameter and being adapted to receive wire winding spindles of various size, the upper end of the lever being beveled to form a laying surface for the wire, means engaged with the upper are shaped slot for tensioning the wire and adjustable in the slot, and means engaged with the lower slot and connected with the lever for holding said lever in adjusted position, said lever being mounted to yield away from the plate at its pivotal connection for the purpose specified, the tensioning means comprising a bolt passingthrough the slot and having its front thereof, the head of the a diametrical slot for the wire,

' the bolt on the bolt havin and a ban led nut engaging opposite side of the plate.

2. A device of the character specified comprising a suitable support having laterally spaced plates, a lever pivoted intermediate its ends to swing on the outer face of one of the plates, said plates having are shaped series of registered openin,;s concentric with the ivotal connection of the lever, that plate carrying the lever having an are shaped slot above the series and an arc shaped slot at said openings being of varying diameter, and being adapted to receive wire windin spindles of various size, the upper end 0 the lever being beveled to form a, laying surface for the wire, means engaged with the upper are shaped slot for tensioning the wire and adjustable'in the slot, and means engaged with lower slot and connected with the lever for holding said. lever in adjusted position, said lever being mounted to yield away from the plate at its pivotal connection, for the purpose specified.

3. A device of the character specified comprising a suitable support having upstanding laterally spaced plates, a lever pivoted intermediate its ends to swing on the outer face of one of the plates, said lates having are shaped series of registermg openings concentric with the pivotal connection of the lever, that plate carrying the lever having an are shaped slot above the series and an arc shaped slot at the lower end of-the plate, said openings being of varying diameter and being adapted to receive wire winding s indles of various size, the upper end of tie lever being beveled to form a laying surface for the wire. means engaged with the upper are shaped slot for tensioning the wire and adjustable in the slot, means engaged with the lower slot and connected with the lever for holding said lever in adjusted position.

4. A device of the character specified, comprising a suitable supporting plate having a series of means for engagement by wire winding spindles of various size, a bar for pressing the wire into contact with the plate as it 'is wound on the spindle, a lever .for laying the coils on the spindle, said lever being normally spring pressed intermediate its ends toward the support, means for holding the end of the lever remote from the spindle to the plate, and means in connection with the lever and engaging the plate for pressing the operative end of the said lever away from the bar. 5. A device of the character specified, comprising a supporting plate having means for supporting a wire winding spindle for rotation, means'for holding the wire in contact with the face of the plate during the winding thereof on the spindle, said spindle being movable longitudinally through the holding means, and means cooperating with the holding means and-adjustable with respect thereto for determining the pitch of the coil of the spring, said means engaging the spindlebetween the coil and the plate.

ARTHUR MGKEVES PARKER.

the lower end of the plate, I 

